[ssh_tools] tabssh: handle tmux

ssh_tools/tabssh.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# tabssh.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
+# tabssh.sh, Copyright © 2013, 2019 Matteo Cypriani <mcy@lm7.fr>
 # (Formerly named cluster-ssh.sh)
 #
 # This program is free software. It comes without any warranty, to
@@ -56,9 +56,14 @@ elif [ $# -ne 1 ] ; then
 fi
 
 # Check dependencies
-SCREEN=$(command -v screen)
-if [ -z "$SCREEN" ] ; then
-  err "GNU screen is required by this script."
+TMUX_CMD=$(command -v tmux)
+SCREEN_CMD=$(command -v screen)
+if [ -n "$TMUX_CMD" ] ; then
+  echo "tmux is available, we'll be using it."
+elif [ -n "$SCREEN_CMD" ] ; then
+  echo "tmux is not available, we'll be using GNU screen instead."
+else
+  err "Either tmux or GNU screen is required by this script."
   exit $EXIT_DEPENDENCY
 fi
 
@@ -82,6 +87,10 @@ fi
 # Create the screen tabs
 while read -r HOST ; do
   SSH="ssh ${LOGIN}${HOST}"
-  # shellcheck disable=SC2086
-  $SCREEN -t "$SSH" $SSH
+  if [ -n "$TMUX_CMD" ] ; then
+    $TMUX_CMD new-window -d -n "$SSH" -- "$SSH"
+  else
+    # shellcheck disable=SC2086
+    $SCREEN_CMD -t "$SSH" $SSH
+  fi
 done <"$HOSTS"